This is the CodeSystem that contains all the codes in BRExameHPVCEPHEID (https://terminologia.saude.gov.br/fhir/CodeSystem/BRExameHPVCEPHEID) and BRExameHPVCEPHEID (https://terminologia.saude.gov.br/fhir/CodeSystem/BRExameHPVCEPHEID). E.g. what you have to deal with if you get resources containing codes in either of them